Brandon, Ari, Kayla, Mackenzie, Dejah

Chemical Bonds
By:
Brandon Wilson
Ari Raimonde
Kayla Diprizio
Mackenzie Sherwood
Dejah Santiago
Materials
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battery, 6-V lantern
copper strip
zinc strip
light bulb and socket
wire leads with alligator
cups (3)
plastic spoons
epsom salt
sugar
iron fillings
cylinder, graduated 50ml
magnifying lens
Materials
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test tubes (3)
test tube clamp
test tube rack
water, distilled
whickless metal alcohol burner
wooden match
For each student
❏ gloves
❏ lab apron
❏ safety goggles
Conductivity Meter
First we had to build the conductivity meter. This is how we made it. First we
clipped one of the alligator clips to the battery springs. Next we connected a
zinc strip to the end of that alligator clip. Then we connected the other
alligator clip to the other battery spring, and with the other end of the
alligator clip connect it to the light bulb.
Conductivity Meter
After that take your last alligator clip, put it on to the other end of the light
bulb. Finally connect the end of the alligator clip to the copper strip. Finally
touch the copper strip and zinc strip together, if you set up the meter right the
light bulb should light up.
Iron Filings
First we measured out five grams of iron filings and put it into a plastic cup and
labeled it iron filings. Then we put the iron filings on a piece of white paper. Then
we recorded our observations.After we recorded our observations on our group’s
paper, we the used a magnifying glass to look at the iron.
Iron Filings. (part two)
We then put both ends of the zinc and the copper metals on the iron
that was on the paper to see if it will light up, but it did not conduct
electricity. We then put the iron into a test tube and put the test tube
over a wickless metal alcohol burner which we then lit with a
wooden match. Then we waited for results. Our results were that
iron filling burnt, but it did not melt. We then tipped it over to see if
it will spill but it did not.
Epsom Salt
First, we measured out 5 grams of epsom salt and put it
in a plastic cup. Then, we labeled the cup salt. We then
laid out the epsom salt on a black piece of construction
paper. Next, we used magnifying glasses to observe the
salt. We saw that the salts looked like crystals and had
the shape of a prism.
Epsom Salt
After we observed, we wanted to see if epsom salt was a
good conductor of electricity. So we put the zinc and
copper metals into the epsom salt. We just watched and
saw that it was not a good conductor of electricity.
Epsom Salt
After we observed that we then mixed the salt in water. We saw
that it does dissolve in water. We also put the zinc and copper
metals in the water to see if it will conduct in water. We watched
and saw that it did conduct electricity.
Epsom Salt
After observing, we put some salt into a test tube. While someone
did that, Ms. R lit the wickless metal alcohol burner. Next we put
clamps on the test tube so it wouldn’t burn us. Then we put the
test tube over the the burner.
Sugar
When our group observed the sugar, we thought the sugar was white and
sparkly . We also thought that the sugar’s shape was cubelike. To see if the
sugar was a good conductor of electricity by itself, our group put the zinc and
copper metals on the sugar. Since the lightbulb didn’t light up, that meant that
the sugar was a poor conductor of energy by itself. We also wanted to see if
the sugar was conductive in water, so our group poured the sugar in the cup
and stirred it around.
Sugar
We also wanted to see if the sugar was conductive in water, so our group
poured the sugar in a cup filled with water and stirred it around. When we
put the copper and zinc metals in the water, the lightbulb didn’t light up,
which means the sugar wasn’t conductive in water.
Sugar
For our final test, we put some sugar in a test tube and lit a wickless burner.
Next, we put clamps on the test tube and put it over the fire. After two minutes
of the test tube with sugar in it over the fire, the sugar turned dark brown.
That meant that the sugar had a low melting point.
Thank you
for
watching!!!!!!